EP0520361A1 - Water cooled inductance for high-current devices - Google Patents

Water cooled inductance for high-current devices Download PDF

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Publication number
EP0520361A1
EP0520361A1 EP92110534A EP92110534A EP0520361A1 EP 0520361 A1 EP0520361 A1 EP 0520361A1 EP 92110534 A EP92110534 A EP 92110534A EP 92110534 A EP92110534 A EP 92110534A EP 0520361 A1 EP0520361 A1 EP 0520361A1
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EP
European Patent Office
Prior art keywords
turns
turn
conductor
coil
choke according
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92110534A
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German (de)
French (fr)
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EP0520361B1 (en
Inventor
Herbert Dung
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Flohe GmbH and Co
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Flohe GmbH and Co
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Publication of EP0520361A1 publication Critical patent/EP0520361A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/16—Water cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2876—Cooling

Definitions

  • the invention relates to a water-cooled choke for high-current systems of the type outlined in the preamble of claim 1.
  • the chokes are particularly inserted into the current paths of electric furnaces.
  • the chokes consist of coils formed from copper or aluminum tubes, the turns of which are fixed in their position relative to one another.
  • the conductor from which the coil is formed must, in terms of cross section, be designed for the maximum current load.
  • the cross section must allow the formation of the turns of the choke coil. At higher current loads, this means that two parallel conductor strands are formed into an outer and an inner coil, whereby additional measures must be taken to ensure that both conductor strands have the same length, for example by twisting the inner conductor strand. It is a very complex production.
  • the invention is based on the need for a water-cooled choke for high-current systems which can be manufactured more easily and therefore also more cost-effectively.
  • the new inductor allows an extraordinarily rational production of the choke coil by using endless material . There are then no limits to the choice of the conductor cross section, so that even with a choke to be designed for a higher current load, a coil having a corresponding conductor cross section is sufficient.
  • the choke in FIGS. 1 and 2 has 13 turns, its input is designated E, its output is A.
  • the turns of the coil forming the choke are each formed by 4 conductor sections, the 13 turns having a coil of a total of 52 sections, which are numbered consecutively from 1 to 52.
  • the successive turns of the coil are mutually offset in the direction of arrows C, C '.
  • D are stiffeners, with F abutments on which the throttle rests. These abutments F are of course not conductive.
  • the required summary of the turns of the choke coil is not shown, this results from the further exemplary embodiment.
  • the inductor 11 has turns, its input is also designated E in FIG. 4, and its output is also referred to A.
  • the turns of this inductor are also composed of 4 conductor sections, each of which is based on Miter cut welded together (B in Fig. 4) again border a rectangle.
  • the transition from one turn into the following turn takes place via a step G in the last of the conductor sections forming a turn, which is formed by a conductor piece I inserted between the sections H, H 'of this conductor section.
  • the successive turns in the sense of arrows C, C 'in FIG. 4 are alternately offset from one another.
  • the windings of the raised (K) choke are combined by means of tensioning screws L, L ', which, starting from the stands K, extend through a base plate M, spacer plates N inserted between the individual windings, and a cover plate O, the spacer plates N being made of non-conductive material exist and are inserted between base plate M and adjacent turn and cover plate O and adjacent turn plates P made of non-conductive material, and the bolts L of the clamping screws L, L 'are embedded in sleeves R made of non-conductive material (Fig. 5), the latter for safety reasons.
  • 5 in FIG. 5 denotes the channels for the cooling water which extend through the conductor
  • T in FIG. 3 denotes a compensating plate.
  • In the intersection-free corner area instead of the plates M, N, O and P webs are provided for combining the coil turns, through which the tensioning screws extend (FIG. 4).
  • the illustrated embodiments do not exclude other solutions while maintaining the basic principle. So can the conductor of rectangular cross section, which is generally formed from a drawn profile, can also be formed from a plurality of tubes which are arranged next to one another and are welded to one another. Other solutions are also possible with regard to the combination of the coil turns.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Insulated Conductors (AREA)
  • General Induction Heating (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

With the object on the one hand of economical manufacture and on the other hand of also having a design capability for relatively high current loads, a water-cooled inductor for high-current systems is proposed, whose windings, which follow a rectangular shape, [lacuna] out of the edges of the windings to form [lacuna]] corresponding to a conductor having a hollow profile of rectangular cross-section. <IMAGE>

Description

Die Erfindung betrifft eine wassergekühlte Drossel für Hochstromanlagen der im Oberbegriff des Patentanspruchs 1 umrissenen Gattung.The invention relates to a water-cooled choke for high-current systems of the type outlined in the preamble of claim 1.

Solche Drosseln werden insbesondere in die Strompfade von Elektroöfen eingefügt. Nach dem Stand der Technik bestehen die Drosseln aus aus Kupfer- bzw. Aluminiumrohren gebildeten Spulen, deren Windung in ihrer Lage zueinander fixiert sind. Der Leiter, aus dem die Spule gebildet wird, muß, was den Querschnitt betrifft, auf die maximale Strombelastung ausgelegt sein. Der Querschnitt muß allerdings die Bildung der Windungen der Drosselspule zulassen. Das läuft bei höheren Strombelastungen darauf hinaus, daß zwei parallel zueinander verlaufende Leiterstränge zu einer äußeren und einer inneren Spule ausgeformt werden, wobei zusätzliche Maßnahmen getroffen werden müssen, die sicherstellen, daß beide Leiterstränge die gleiche Länge aufweisen, etwa indem der innere Leiterstrang verwunden wird. Es handelt sich hierbei um eine sehr aufwendige Fertigung.Such chokes are particularly inserted into the current paths of electric furnaces. According to the prior art, the chokes consist of coils formed from copper or aluminum tubes, the turns of which are fixed in their position relative to one another. The conductor from which the coil is formed must, in terms of cross section, be designed for the maximum current load. However, the cross section must allow the formation of the turns of the choke coil. At higher current loads, this means that two parallel conductor strands are formed into an outer and an inner coil, whereby additional measures must be taken to ensure that both conductor strands have the same length, for example by twisting the inner conductor strand. It is a very complex production.

Ausgegehend vom Stand der Technik liegt der Erfindung das Bedürfnis nach einer wassergekühlten Drossel für Hochstromanlagen zugrunde, die sich leichter und damit dann auch kostengünstiger fertigen läßt.Starting from the prior art, the invention is based on the need for a water-cooled choke for high-current systems which can be manufactured more easily and therefore also more cost-effectively.

Dem Bedürfnis wird mit einer gattungsgemäßen Drossel für Hochstromanlagen Rechnung getragen, die entsprechend dem kennzeichnenden Teil des Patentanspruchs 1 ausgebildet ist.The need is met with a generic choke for high-current systems, which is designed according to the characterizing part of claim 1.

Die neue Drossel, deren kennzeichnende Merkmale die Bildung der ein Rechteck einschließenden Spulenwindungen aus jeweils vier an ihren Stoßstellen miteinander verschweißten Leiterabschnitten, von denen der eine Windung vollendende Leiterabschnitt in die nächste Windung übergeht, sind, gestattet unter Rückgriff auf Endlosmaterial eine außerordentlich rationelle Fertigung der Drosselspule. Der Wahl des Leiterquerschnitts sind dann auch keine Grenzen gesetzt, so daß man auch bei einer auf eine höhere Strombelastung auszulegenden Drossel mit einer einen entsprechenden Leiterquerschnitt aufweisenden Spule auskommt.The new inductor, the characteristic features of which are the formation of the coil turns enclosing a rectangle from four conductor sections welded together at their abutment points, from which the conductor section completing one turn merges into the next turn, allows an extraordinarily rational production of the choke coil by using endless material . There are then no limits to the choice of the conductor cross section, so that even with a choke to be designed for a higher current load, a coil having a corresponding conductor cross section is sufficient.

Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Embodiments of the invention result from the subclaims.

In der Zeichnung ist die Erfindung anhand von in schematischer Weise dargestellten Ausführungsbeispielen weitergehend erläutert. Es zeigen:

Figur 1
eine erste Ausführungsform der neuen Drossel in Seitenansicht,
Figur 2
die Drossel in Fig. 1 in Draufsicht,
Figur 3
eine zweite Ausführungsform der neuen Drossel im Schnitt nach Linie III - III in Fig. 4,
Figur 4
die Drossel in Fig. 3 in Draufsicht,
Figur 5
einen Schnitt nach Linie V - V in Fig. 4 in größerem Maßstab.
In the drawing, the invention is explained in greater detail on the basis of exemplary embodiments shown in a schematic manner. Show it:
Figure 1
a first embodiment of the new throttle in side view,
Figure 2
1 in top view,
Figure 3
4 shows a second embodiment of the new throttle in section along line III-III in FIG. 4,
Figure 4
3 in top view,
Figure 5
a section along line V - V in Fig. 4 on a larger scale.

Die Drossel in den Figuren 1 und 2 weist 13 Windungen auf, ihr Eingang ist mit E bezeichnet, ihr Ausgang mit A. Wie aus Fig. 2 ersichtlich ist, werden die Windungen der die Drossel bildenden Spule von jeweils 4 Leiterabschnitten gebildet, die 13 Windungen aufweisende Spule von insgesamt 52 Abschnitten, die fortlaufend von 1 bis 52 durchnummeriert sind. Die von den auf Gehrung geschnittenen, miteinander verschweißten (B) Leiterabschnitten, z.B. 1 - 4, gebildeten Windungen schließen Rechtecke ein, der jeweils letzte Leiterabschnitt einer Windung, z.B. 4, geht in den ersten Leiterabschnitt, z.B. 5, der folgenden Windung über. Aus fertigungstechnischen Gründen sind die aufeinanderfolgenden Windungen der Spule im Wechsel im Sinne der Pfeile C, C' zueinander versetzt. Mit D sind Aussteifungen bezeichnet, mit F Widerlager, auf denen die Drossel ruht. Diese Widerlager F sind selbstverständlich nichtleitend. Nicht dargestellt ist die erforderliche Zusammenfassung der Windungen der Drosselspule, diese ergibt sich aus dem weiteren Ausfürungsbeispiel.The choke in FIGS. 1 and 2 has 13 turns, its input is designated E, its output is A. As can be seen from FIG. 2, the turns of the coil forming the choke are each formed by 4 conductor sections, the 13 turns having a coil of a total of 52 sections, which are numbered consecutively from 1 to 52. The turns formed by the miter cut, welded (B) conductor sections, for example 1-4, enclose rectangles, the last conductor section of one turn, for example 4, merges into the first conductor section, for example 5, of the following turn. For manufacturing reasons, the successive turns of the coil are mutually offset in the direction of arrows C, C '. With D are stiffeners, with F abutments on which the throttle rests. These abutments F are of course not conductive. The required summary of the turns of the choke coil is not shown, this results from the further exemplary embodiment.

Bei dem Ausführungsbeispiel nach den Figuren 3 bis 5 weist die Drossel 11 Windungen auf, ihr Eingang ist in Figur 4 auch wieder mit E bezeichnet, ihr Ausgang auch wieder mit A. Die Windungen dieser Drossel sind auch wieder aus jeweils 4 Leiterabschnitten zusammengesetzt, die auf Gehrung geschnitten miteinander verschweißt (B in Fig. 4) auch wieder ein Rechteck einfassen. In diesem Falle erfolgt der Übergang von einer Windung in die folgende Windung über eine Stufe G im letzten der eine Windung bildenden Leiterabschnitte, die durch ein zwischen die Teilstücke H, H' dieses Leiterabschnittes eingefügtes Leiterstück I gebildet wird. Auch in diesem Fall sind die aufeinander folgenden Windungen im Sinne der Pfeile C, C' in Fig. 4 im Wechsel zueinander versetzt. Die Windungen der aufgeständerten (K) Drossel sind durch Spannschrauben L, L' zusammengefaßt, die von den Ständern K ausgehend, sich durch eine Grundplatte M, zwischen die einzelnen Windungen einfügte Distanzplatten N und eine Abdeckplatte O erstrecken, wobei die Distanzplatten N aus nichtleitendem Material bestehen und zwischen Grundplatte M und angrenzende Windung sowie Abdeckplatte O und angrenzende Windung Platten P aus nichtleitendem Material eingefügt sind, sowie die Bolzen L der Spannschrauben L, L' in Hülsen R aus nichtleitendem Material eingelagert sind (Fig. 5), letzteres aus Sicherheitsgründen. Mit S sind in Fig. 5 die sich durch den Leiter erstreckende Kanäle für das Kühlwasser bezeichnet, mit T in Fig. 3 eine Ausgleichsplatte. Im kreuzungsfreien Eckbereich sind für die Zusammenfassung der Spulenwindungen anstelle der Platten M, N, O und P Stege vorgesehen, durch die sich die Spannschrauben erstrecken (Fig. 4).In the exemplary embodiment according to FIGS. 3 to 5, the inductor 11 has turns, its input is also designated E in FIG. 4, and its output is also referred to A. The turns of this inductor are also composed of 4 conductor sections, each of which is based on Miter cut welded together (B in Fig. 4) again border a rectangle. In this case, the transition from one turn into the following turn takes place via a step G in the last of the conductor sections forming a turn, which is formed by a conductor piece I inserted between the sections H, H 'of this conductor section. In this case too, the successive turns in the sense of arrows C, C 'in FIG. 4 are alternately offset from one another. The windings of the raised (K) choke are combined by means of tensioning screws L, L ', which, starting from the stands K, extend through a base plate M, spacer plates N inserted between the individual windings, and a cover plate O, the spacer plates N being made of non-conductive material exist and are inserted between base plate M and adjacent turn and cover plate O and adjacent turn plates P made of non-conductive material, and the bolts L of the clamping screws L, L 'are embedded in sleeves R made of non-conductive material (Fig. 5), the latter for safety reasons. 5 in FIG. 5 denotes the channels for the cooling water which extend through the conductor, and T in FIG. 3 denotes a compensating plate. In the intersection-free corner area instead of the plates M, N, O and P webs are provided for combining the coil turns, through which the tensioning screws extend (FIG. 4).

Die dargestellten Ausführungsformen schließen andere Lösungen unter Beibehaltung des Grundprinzips nicht aus. So kann der in der Regel aus einem Ziehprofil gebildete Leiter rechteckigen Querschnitts auch aus einer Mehrzahl von nebeneinander einander berührend angeordneten, miteinander verschweißten Rohren gebildet werden. Auch was die Zusammenfassung der Spulenwindungen betrifft, sind andere Lösungen möglich.The illustrated embodiments do not exclude other solutions while maintaining the basic principle. So can the conductor of rectangular cross section, which is generally formed from a drawn profile, can also be formed from a plurality of tubes which are arranged next to one another and are welded to one another. Other solutions are also possible with regard to the combination of the coil turns.

Claims (9)

Wassergekühlte Drossel für Hochstromanlagen, bestehend aus einer von einer Mehrzahl von Windungen eines ein Hohlprofil rechteckigen Querschnitts aufweisenden Leiters gebildeten, in den Strompfad und in den Kühlwasserkreislauf einfügbaren Spule, dadurch gekennzeichnet, daß die ein Rechteckt einschließenden Windungen der Spule aus den Kanten des Rechtecks entsprechenden Leiterabschnitten (z.B. 1, 2, 3, 4) zusammengesetzt sind, wobei der eine Windung vollendende Leiterabschnitt (4) in die folgende, sich parallel zur vorausgehenden Windung (1, 2, 3, 4) erstreckende Windung (5, 6, 7, 8) übergeht.Water-cooled choke for high-current systems, consisting of a coil formed by a plurality of turns of a conductor having a hollow profile with a rectangular cross section and insertable into the current path and into the cooling water circuit, characterized in that the turns of the coil enclosing a rectangle from the edges of the rectangle correspond to conductor sections (For example 1, 2, 3, 4) are composed, the conductor section (4) completing one turn into the following turn (5, 6, 7, 8) extending parallel to the preceding turn (1, 2, 3, 4) ) transforms. Drossel nach Anspruch 1, gekennzeichnet durch einen stetigen Übergang des eine Windung (z.B. 1, 2, 3, 4) vollendenden Leiterabschnitts (4) in die folgende Windung (5, 6, 7, 8).Choke according to claim 1, characterized by a continuous transition of the conductor section (4) completing one turn (e.g. 1, 2, 3, 4) into the following turn (5, 6, 7, 8). Drossel nach Anspruch 1, dadurch gekennzeichnet, daß der in die folgende Windung übergehende Leiterabschnitt eine Stufe (G) aufweist (Fig. 3).Choke according to claim 1, characterized in that the conductor section merging into the following turn has a step (G) (Fig. 3). Drossel nach Anspruch 3, dadurch gekennzeichnet, daß die Stufe (G) von einem in den geteilten Leiterabschnitt (H, H') eingefügten Leiterstück (I) gebildet wird.Choke according to claim 3, characterized in that the step (G) is formed by a conductor piece (I) inserted into the divided conductor section (H, H '). Drossel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Leiterabschnitte (z.B. 1, 2, 3, 4) sowie gegebenenfalls die Teilstücke (H und H') des in die folgende Windung übergehenden Leiterabschnittes (H, H') und das Paßstück (I) auf Gehrung geschnitten zusammengefügt miteinander verschweißt sind (B).Choke according to one of Claims 1 to 4, characterized in that the conductor sections (for example 1, 2, 3, 4) and, if appropriate, the sections (H and H ') of the conductor section (H, H') merging into the following turn and that Fitting piece (I) cut to miter are welded together (B). Drossel nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Windungen im Wechsel beginnend mit der auf die Ausgangswindung (1, 2, 3, 4) folgenden Windung 5, 6, 7, 8 nach der von dem den Eingang bildenden Leiterabschnitt (1) abgekehrten Seite hin um die Breite des Leiters zuzüglich eines Spiels versetzt (Pfeil C) und anschließend wieder zurückversetzt (Pfeil C') sind.Choke according to one of Claims 1 to 5, characterized in that the turns alternately starting with the turn 5, 6, 7, 8 following the output turn (1, 2, 3, 4) after the conductor section ( 1) the opposite side is offset by the width of the ladder plus one game (arrow C) and then set back again (arrow C '). Drossel nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Windungen (1, 2, 3, 4 u. 5, 6, 7, 8 ...) in den Eckbereichen der Windungen zusammengefaßt sind (L, L').Choke according to one of Claims 1 to 6, characterized in that the turns (1, 2, 3, 4 and 5, 6, 7, 8 ...) are combined in the corner regions of the turns (L, L '). Drossel nach Anspruch 7, gekennzeichnet durch eine Zusammenfassung mittels Spannschrauben (L, L'), die sich ausgehend von einer gegenüber der angrenzenden Windung isolierten Grundplatte (M) durch zwischen den Windungen in ihrem Kreuzungsbereich eingefügte, gegenüber den Windungen isolierte Distanzplatten (N) und eine die Spule einfassende, gegenüber der angrenzenden Windung isolierte Abdeckplatte (O, P) erstrecken.Choke according to claim 7, characterized by a combination by means of tensioning screws (L, L ') which, starting from a base plate (M) insulated from the adjacent turn, are inserted by spacer plates (N) and inserted between the turns in their crossing area extend a cover plate (O, P) which surrounds the coil and is insulated from the adjacent turn. Drossel nach Anspruch 7, dadurch gekennzeichnet, daß die Windungen mindestens im Bereich der kreuzungsfreien Ecke durch Spannschrauben zusammengefaßt sind, die sich ausgehend von gegenüber den angrenzenden Windungen isolierten Grundstegen durch zu beiden Seiten der kreuzungsfreien Ecke zwischen die Windungen eingefügte, gegenüber den Windungen isolierte Distanzstege und die Spule einfassende, gegenüber der angrenzenden Windungen isolierte Abdeckstege erstrecken, wobei im Bereich der in das Spuleninnere zurückspringenden Windung ein Ausgleichsstück vorgesehen ist.Choke according to Claim 7, characterized in that the turns are combined at least in the area of the intersection-free corner by tension screws which, starting from base webs insulated from the adjacent turns, are inserted between the turns on both sides of the intersection-free corner, spacer webs and insulated from the turns cover bridges enclosing the coil and insulated from the adjacent turns, a compensating piece being provided in the area of the turn returning into the inside of the coil.
EP92110534A 1991-06-27 1992-06-23 Water cooled inductance for high-current devices Expired - Lifetime EP0520361B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4121204A DE4121204A1 (en) 1991-06-27 1991-06-27 WATER-COOLED THROTTLE FOR HIGH CURRENT SYSTEMS
DE4121204 1991-06-27

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EP0520361A1 true EP0520361A1 (en) 1992-12-30
EP0520361B1 EP0520361B1 (en) 1995-12-13

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AT (1) ATE131656T1 (en)
DE (2) DE4121204A1 (en)
ES (1) ES2082281T3 (en)

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Publication number Priority date Publication date Assignee Title
DE19814896A1 (en) * 1998-04-02 1999-07-08 Vacuumschmelze Gmbh Electrical power transformer for high current of at least 1 kHz
EP1014763A2 (en) * 1998-12-23 2000-06-28 Eaton Corporation Compact helical resonator coil for ion implanter linear accelerator

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103295742A (en) * 2013-05-30 2013-09-11 浙江金华巨能电子科技有限公司 Secondary coil of transformer of welding machine
DE102018109565A1 (en) * 2018-04-20 2019-10-24 Block Transformatoren-Elektronik Gmbh coil assembly

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DE842083C (en) * 1950-06-15 1952-06-23 Chemische Werke Huels G M B H Short-circuit current limiting reactor
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19814896A1 (en) * 1998-04-02 1999-07-08 Vacuumschmelze Gmbh Electrical power transformer for high current of at least 1 kHz
EP1014763A2 (en) * 1998-12-23 2000-06-28 Eaton Corporation Compact helical resonator coil for ion implanter linear accelerator
EP1014763A3 (en) * 1998-12-23 2002-10-23 Axcelis Technologies, Inc. Compact helical resonator coil for ion implanter linear accelerator
KR100466701B1 (en) * 1998-12-23 2005-01-15 액셀리스 테크놀로지스, 인크. Compact helical resonator coil for ion implanter linear accelerator

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ATE131656T1 (en) 1995-12-15
ES2082281T3 (en) 1996-03-16
DE4121204A1 (en) 1993-01-14
EP0520361B1 (en) 1995-12-13
DE4121204C2 (en) 1993-06-17
DE59204651D1 (en) 1996-01-25

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